Grease-cock



UNITED STATES APATEN OFFICE.

ROBT. M. VADE, OF WADESVILLE, VIRGINIA.

GREASE-COCK.

Specification of Letters Patent No. 9,010, dated .Tune 8, 1852.

To all whom it may concern:

Be it known that I, ROBERT M. WADE, of Wadesville, in Clarke county andState of Virginia, have invented a new and useful Improvement inApparatus for Greasing the Cylinders of Steam-Engines, and do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the annexed drawings, and letters ofreference marked thereon, making a part of this specification, in which-Figure l, is a front view of the entire apparatus. Fig. 2 is a verticalsection taken through the center parallel to the front. F ig. 3 is aside View of the rotating chamber to contain the oil, and the lever, bywhich it is operated. Fig. 4 is a sectional view drawn to a largerscale.

The same letters, occurring in different figures indicate the sameparts.

A is a hollow circular chamber to contain the oil or other lubricant andhas one opening a, to receive and discharge at, the

surface of this cylinder, in ground between the two semi-circularsurfaces B, B, which are bolted together with flanges Z), b, forming anouter cylinder or jacket in which the chamber A rotates; C is a lever onsaid chamber by which it is turned either by hand, or by a rod connectedtherewith extended to any convenient spot, and has a gage stop c, whichcan be adjusted in the slot d, to regulate the stroke of said lever; Dis an additional globular reservoir to contain oil and may be of anydesired capacity, or may be dispensed with altogether.

The apparatus is intended to be screwed into the top of the steam chestor cylinder, and operates as follows the rotating chamber A is to be setso as to bring the opening a, therein opposite the opening e, in theupper half of the outer cylinder, and then filled with oil through theopening f. Vhen the oil is required to be discharged into the cylinderthe chamber A is to be turned until the opening a therein is broughtdown to the inclined passage L and discharged in any Vquantity inproportion to the distance it is turned over the inclined passage z.Vhen suiiicient oil is admitted into the cylinders it may be turned backfar enough for the opening a, to leave the incline L, When the remainderof the oil will be retained in the chamber A for future use. By thisarrangement oil can be admitted into the cylinder of a steam engine,whether she be running or standing, by the engineer, without leaving hispost at the tender, which (when running), would be a dii'licult anduncertain operation, owing to the eXtreme tremor of the locomotive, anddistance of the operator, requiring a long connecting rod to turn thecylinder A. It will be seen, that if the hole a, in the rotating chamberA, had to be brought over a corresponding circular hole, in the lowerpart of the outer cylinder B, the distance for said rotating chamber tobe moved, would be so small, that there would be no certainty, orregularity, in the quantity of oil admitted into the steam cylinder:Whereas, by forming the inclined passages it, of any desirable lengthand of continually varying area the sweep of the rotating chamber, willbe proportionately greater, and in proportion to the extent the hole a,is moved over said inclined passage 7L more or less oil will bedischarged; and the stop o, being so set, as to prevent a directpassage, of the oil downward, it will be discharged more gradually,consequently allowing more time for the operation.

By an inspection of Fig. 4, which represents the inclined passage 71.drawn to a larger scale it will be perceived that it is so constructedthat the area of its transverse section varies from the full size of aup to a mere line or slit and this area regulates the effective size ofthe discharge opening-a turn of the cylinder through a considerableangle will vary the size of the outlet only a small quantity and hencethe amount of flow may be regulated with the greatest nicety. Now, whencylinder A is turned till the center of discharge opening a iscoincident with line 2 a very small quantity of oil will flow intoinclined opening h, and when it is coincident with line l the flow ofthe oil will be entirely cut off. When coincident with line 3 a largerquantity will escape than when in the first named position. And when ina line with the opening 0, or line 4 the maximum flow of oil will takeplace.

Having thus described my invention what In testimony whereof I havehereunto I claim therein as new and desire to secure signed my namebefore two subseribng wit- 10 by patent isnesses.

The inclined discharge passage h of vary- 5 ing area, constructed,arranged and operating, with respect to and in connection withWitnesses: the hollow cylinder and its aperture a, in the A. E. H.JOHNSON, manner and for the purpose herein set forth. WM. M. SMITH.

ROBT. M. WADE.

